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OPTIMIZATION MODEL FOR THE DESIGN OF MULTI-LAYERED PERMEABLE REACTIVE BARRIERS
Polonski, M., K. Pawluk, and I. Rybka.
IOP Conference Series: Materials Science and Engineering 245:1-8(2017)

Barrier dimensions are the most important parameters for permeable reactive barrier (PRB) design. The barrier must be long enough to treat the entire width of the plume (dimension perpendicular to groundwater flow) and should extend to and be keyed into an impermeable layer. The optimal thickness of a PRB should provide a residence time appropriate for reducing the concentration of contaminants to the desired effluent concentration. PRB design is accomplished using numerical methods or simulators, which are useful to predict the scenarios and evaluate the resulting groundwater flow systems to specific site conditions; however, numerical methods are complicated and may have significant errors if the discretization is too coarse or is incorrectly aligned. This paper describes a simple conceptual model of a one-approach optimization method for multi-layered PRB design. The required thicknesses of activated carbon, zeolite, and zero-valent iron (with consideration of their respective cost) were calculated using two different algorithms. This simple model can be used for rapid preliminary barrier design and cost calculations. http://iopscience.iop.org/article/10.1088/1757-899X/245/7/072017/pdf



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